Chimney valve



-K. wEmEL, CHIMNEY VALVE.

, Patented June 20, 1922.

2 SHEETS-SHEET l.

K. WEINELI A l cHlMNEY vALvE. APPLICATION FILED` JUNE 30| l19H).

lanteaJune 20,- 1922.

2 SHEETS-SHEET 2.

naar. warner, or cnroaeo, Immers, assrGNonr-o renvnairssnnrfa COMPANY,

or CHICAGO, ILLrnors, a CORPORATION' or MAINE.

CHIMNEY VALVE.-

Specification of Letters Patent. i Patented June 20, 1922i,

Application filed .Tune 30, 1919.. 'Serial No. 307,646.

To all w 710m 'it may concern Be it known that 1, KARL l/Vnrnnn, 'lormei-ly citizen ot the German Empire, but who. now hac declared his intention oi" becoming a citizen ot theUnited States, residing at Chicago, in the county ot Cook and State ot illinois, have invented certain new and useful Improvements in a Chimney Valve, ot' .which the following is a specification. l

My invention relates toa chimney valve tor use in connection with the operation of hot blast stoves of the regenerative type and has Ylor its object the provision ot' a valve which may be easily and conveniently operated, and which will be positive in its operation and simple in construction;

Another object of my invention is the provision olf a valve which will not bind upon its seat'and which 'when dropped downward to closed position, will automatically adat itself to its seat so as to effectively close t e opening` leading Jfrom the hot blast stove to the chimney.

Another object of my invention is the provision of chimney valve the parts of which when warped by the actionV of the heat or when worn can `be readily renewed and replaced by new parts.

Another' andfurther object oi? my inven-.

tion is the provision ot a chimney valve having a counterbalance secured thereto in such manner that it can be easily and quickly moved from closed to open position and vice versa.

Still a 'further object of my invention is the provision ot a chimney valve which is simple and efficient in operation and Vwhich can be easily installed and maintained.

My invention will be further and better understood by reference to the accompanying drawings and in which- Figure 1 is a vertical sectional view throughthe valve and pipes within which it is located and showing the valve in' closed position in-fullllines and=in open position in dotted lines.

lFigure 2 is a top view showing in position; and

Figure 3 is a view in elevation showing the cover removed andthe valve in open position.

Referring now specifically to the drawings andin whichvlike reference characters refer to likepartsthroughout, 10 is the wall the cover o1"v a hot blast stove through which a pipe 11`r enters and'which forms the exit to the chimney fromthe stove. Acur-ved pipe or elbow 12 is joined to the pipe 'l1 and within which the valve hereinafter' described is mounted. A short section oit pipe`13`is provided`having an annular flange 1,21l which rests upon the foundation 15 and: which leads to a brickwork opening 16 leadingto the ychimney.

Onthe upper edgey of the pipe 13isan annular rim or projecting. flangev 17 Aand through which a bolt 18 passes which also passes through atlange 19 on theelbow 12.` Extending outwardly from the elbow 12 onl its lowerI end is a projection 2O underneath ot which a. plurality of jack bolts such as 21' rest upon seats such as 22 which are provided for purposes hereinafter described. Resting upon the upper-edge ot the pipe 13 is an annular valve seat 23 the upper inside edge 24 or which is rounded or slightly bev.- *f

is rounded in order to'pro'perly yconform to,

the bevel edge 24- ot'the valveV seat 23. The under side of the valve 25 is protected a layer of vitro-lire-felt 26a covering which is a layer of expanded metal?? and through which bolts 28, 28 pass which secure the eX- panded metal -and the fire-felt to the valve 25. Gver the expanded'metal and the headsy of the bolts Q3 is a layer of retort cement 29. Across the upper surface of the valve 25 and formed integrally therewith is a pair ot' projections 31 and 32 and'to which, by. means of a'bolt 33, is secured an arm 34, the said bolt having. washers 35 upon each of its ends and pins 36, 36 inserted therethrough to hold yit in proper position. The arm 34 has a head portion 34a which has a doubletapered aperture 34 therethroughlso that a pivotal connection isv formed between the arm34 and thev bolt 33.A A shaft 37is prothe shaft opening. A gland 42 is provided which is held in position by means of studs 43, 43 having nuts 44, 44 thereon so that the gland 42l may be drawn into position to prevent the escape of gas through the shaft opening in the wall of the elbow 12. The rear end of the lever 34 is bifurcated and has the shaft 37 passing therethrough and is keyed to the said shaft by means of a key 45 which occupies suitable seats in the shaft 37 and the lever 34. Mounted on the outer end of the said shaft is a segmental gear 46 which is held in position by a bolt 47 in threaded engagement with the shaft 37. Suitably mounted upon a pin 48 which is held in position in a projection 49 upon the wall of the elbow by means of a cap screw 50 is a 'segment 51 which :is in mesh with the segment 46, the said segment 51 being held in position by means of a cap screw 52 in threaded engagement with the outer end of the pin 48. Secured to a projection 53 by means of bolts 54, 54 is a lever 55 to the end of which a counter-weight 56 is secured by means of a bolt 57, a plurality of holes 57a being provided in the lever 55 to permit of the adjustment of the counter-weight to different positions; a pin 58 is inserted in said counter-weight to form a convenient means for moving the lever 55; a removable cap 59 is secured to the elbow 12 by means of bolts 60 so that access may be had to the inside of the elbow 12 for various purposes.

The operation of the device is exceedingly simple and will be readily understood Aby reference to Figure l, wherein the valve is shown in closed position in full lines and in open position in dotted lines. The counterweight 56 is adjustably secured to the lever 55 by means of the bolt 57 so that it may be adjusted to different positions to properly perform its function of properly balancing the valve 25. As shown in Figure l, when the valve is in closed position the lever and counter-weight are elevated, and when it is desired to open the valve when the stove is to be put on blast the workman by grasping the pin 58 and pushing downward is able to swing the valve 25 up and into the position shown in dotted lines in Figure l, and when it is desired to close the valve, the workman simply lifts the counter-weight up and the valve comes into closed position. It will be noted that the upper inside edges of the valve seat are curved and also the edges of the valve 25 are also rounded off to conform to the valve seat, so that when the valve 25 comes in contact with the valve seat it will center itself automatically on the valve seat and effectively close the passageway. The pivotal connection between the arm 34 and the valve 25 also permits the valve 25 to swing freely into position upon the valve seat without binding. It will be understood that the counter-weight is placed in such position on the lever 55 that it does not evenly balance the weight of the valve 25 and the arm 34, but is adjusted to such position that the weight of the valve 25 and the arm 34 is slightly in excess of the force exerted by the counter-weight, else there would be liability of the countersweight opening the valve when not desired. It will be noted also that the position of the counter-weight, when the valve is closed, is such that the greatest force is exerted upon the segment because in this position more weight is required to counter-balance the valve 25 than when the valve is elevated and in open po'- sition; also that as the valve is elevated less force is required to counterbalance it and when the countereweight hasswung downwardly a portion of its weight is sustained on the pin 48. It also will be understood that the weight of the valve 25 is sustained almost wholly upon the shaft 37 when theV valve is in open position, and immediatelyupon the counter-weight beingl elevated and the valve thereby swung inward and downward, its weight is immediately transferred to the counter-weight through the action of the shaft 37 and the segmental gears, so that at the commencement of each of the movements of opening and closing the valve more ing a bar or another device between the pro-` jections 17 and 19, and slipping the valve seat out. This may become necessary if the valve seat becomes worn or warped so that there is not a tight joint between the valve 25 and the valve seat 23.

While I have described more or less pre cisely the details of construction, I do not wish to be understood as limiting myself thereto, as l contemplate changes in form and the proportion of parts and the'substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit or scope of my invention.

I claim: Y

l. In combination, a valve, a yrotatable shaft upon which said shaft is mounted, a counterweight connected to said rotatable shaft, the said counterweight tending to hold the said valve in open position and tending to open said valve when in closed position.

2. In combination, a valve, a valve seat,

a pipe within which said valve is mounted, a shaft extending through the walls of the said pipe, bearings within which said shaft sov is mounted, means for connecting the valve to said shaft, a segmental gear mounted upon said shaft, a second segmental gear in mesh with said first mentioned segmental gear, and a counter-weight secured to the second gear, the said counterweight tending to open the valve and retain it in such position when open.

3, In combination, a valve having rounded lower outside edges, a valve seat whose upper edges are rounded to co-act with said valve, a rotatable shaft upon which said valve is mounted, segmental gears in mesh with each other, one of said gears being secured to the shaft, a counter-weight secured to the other of said gears whereby the weight of the valve is counterbalanced in either open or closed positions.

4. In combination, a valve, a pipe within which said valve is mounted, a valve seat, a rotatable shaft extending through thewall of said pipe, means for connecting the said valve to the said shaft and a movable counterweight secured to the outer end of said shaft whereby the force exerted by the said counterweight upon the said valve varies according to the position of the said valve, whereby a constant force is exerted upon said valve tending to open said valve and retain it in such position when open.

5. In combination, a valve, a pipe within which said valve is mounted, a valve seat, a rotatable shaft extending through the wall of said pipe, means for connecting the said valve to the said shaft and an adjustable movable counterweight secured to the outer end of said shaft whereby the force exerted by the said counterweight upon the said valve varies according to the position of the valve, the said counterweight tending to open said valve and retain it in such position when open.

6. In combination, a valve having rounded lower outside edges, a valve seat whose upper edges are rounded to co-act with said valve, a rotatable shaft upon which said valve is mounted, gears in mesh with each other, one of said gears being secured to the shaft, a counterweight secured to the other of said gears whereby the weight of the valve is counterbalanced ineither open or closed posit-ions.

7. In combination, a valve, a pipe within which said valve is mounted, a valve seat,

a rotatable shaft, means for connecting said valve to the rotatable shaft, a gear mounted on the outer end of said shaft, a second gear mounted upon said pipe and in mesh with the first mentioned gear, a lever secured to said second mentioned gear, and a counterweight secured to said lever.

8. In combination, a valve, a pipe within which said valve is mounted, a valve seat, a rotatable shaft, means for connecting said valve to the rotatable shaft, a gear mounted on the outer end of said shaft, a second gear mounted upon said pipe and in mesh with the first mentioned gear, a lever secured to said second mentioned gear, and a counterweight secured to said lever, the said lever extending at an angle from the gear to which it is secured whereby the maximum amount of force is exerted upon said valve when the valve offers maximum resistance@ 9. In combination, a valve casing, a valve 1n said casing, a valve seat, means for opening and closing said valve, and a counter- 11. In combination, a valve casing, a valve in said casing, a Valve seat, means for opening and closing said valve, and a counterweight secured to said means adapted to exert force tending to open said valve, the counterweight exerting a maximum force on said valve when in closed position and a minimum force upon said valve when in open position.

l2. In combination, a valve casing, a valve in said casing, a shaft extending through said casing, means for connect-ing said valve to said shaft, and a counterweight secured to the outer end of said .shaft whereby force is exerted upon said valve tending to open said valve and retain it in open position at all times.

Signed at Chicago, Ill., this 20th day of June, 1919.

KARL WEINEL.

Certicate of Correction.

It is hereby certified that the name of the assignee in Letters Patent No. 1,420,397, granted June 20, 1922, upon the application of Karl Weinel, of Chicago, llinois, for an improvement in Chimney Valves, was erroneously described and specified as Treyn7 Brassert & Company, Whereas said assignee should have been described and specified as Frey/n, Brassart d3: Uompomy, as shown by the records of assignments in this oice; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

signed and Sealed this 8th day of August, A. D., 1922.

KARL FENNING,

Acting @omissioner of Patents.

[SEAL] 

